Bounds Green maintained the Mark 1 ICHV (VIP) fleet, which was largely made up of FOs, BCKs and RBRs. However there were some smaller fleets:
- 325 - Restaurant First that had served for a number of years in the Royal Train (numbered 2907);
- 80041 - Kitchen Car converted from an RBR;
- 2833/2834 - Staff Couchettes converted from BCKs that included a shower;
- 6320 - Special Saloon renumbered from a Departmental Saloon
There were also a couple of Mark 1 FKs and BFKs plus the previously mentioned Mark 3A Sleeping Cars used on Land Cruises.
A couple of Mark 2D FOs were trial refurbished but I believe weren't considered suitable for long term use.
Old Oak Common did have Mark 2E FOs refurbished for an air-conditioned VIP, which operated with 2D BFKs and Mark 1 RBRs.
From the mid to late 1980s there was also the ex-Manchester Pullman fleet of ten coaches that was based at Euston Downside. The ten remaining vehicles were renamed after English Lakes and was known as the Lakeland Pullman.
Outside of the VIP fleet was the more general fleet. Initially based at Liverpool Edge Hill it migrated to Carlisle Upperby. Mark 1 TSOs and Mark 2D BFKs were joined by Mark 2D/2E TSOs displaced from CrossCountry.
Finally there was a small fleet of coaches for Steam Specials that wore LNER Tourist Green and Cream. Three sets of coaches were used over the years but only the latter two were allocated to InterCity. Used on the West Highland Line in Summer they could appear across the country in Winter when used as a general charter rake.
All the above is very high level and generalised. I am sure others will add details for specific years. But the Charter Train unit was quite large. It just didn't have a home come privatisation. When sold off to Waterman Railways it had been transferred to Rail Express Systems (Res). One thing I recall is that the ex-InterCity 47/8s were considered good locos so when the unit was sold Res kept them and sold mainly ex-ScotRail (via NSE and/or Res) 47/7s to Waterman.